Armature-coil.



PATENTED 10, 1903. C. KNAPE.

ARMATURE COIL.

APPLmATIoN FILED JULY 9. 1903.'

iig? NO MoDE-L. dgl

llllllll IIL No. F4/L01?. Eatented November 10, iSJ.

UNTED STATES PATENT OFFICE.

CHARLES KNAPE, OF PI'FTSBURG, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO CHARLES A. PSILANDER, OF PITTSBURG, PENNSYLVANIA.

ARMATURE-COH..

SBECEFCATION forming part of Letters Patent No. 744,012, dated November l0, 1903.

Application led July 9, 1903. Serial No. 164,918. (No modeLl To all whom it may concern: Figure l is a plan view of the strap which Be it known that I, CHARLES KNAPE, a citiforms the armature-coil as the same is first zen of the United States of America, residing formed. Fig. 2 is a similar view showing the at Pittsburg, in the county of Allegheny and strap after the ends thereofI have been lat- 55 State of Pennsylvania, have invented certain tened. Fig. 3 is a side elevation of my imnew and useful Improvements in Armatureproved strap, the same being shown in the Coils, of which the following is a speci ticaposition which it would occupy on the armation, reference being had therein to the acture-core, said core being indicated in dotted companying drawings. lines. Fig. i is a plan view showing the strap 6o o rlhis invention relates to certain new and in position on an armature-core, the said core useful improvements in armature-coils, and and commutator being indicated in dotted more particularly to the straps which are used lines. Fig. 5 is a diagram showing the space in 'forming the same. saved by forming the strap in accordance with The object of this invention is to so conmy invention. 65 l5 struct the strap which forms the armature-coil ln the accompanying drawings a coil conthat the same may be more compactly formed sisting of a single strap only has been illuson either side of the armature-core and to actrated, but it will be obvious that the invencomplish this result without decreasing the tion could be carried out with a coil consistconducting area of said strap. in g of any number ori'orni of straps. The rei- '7o 2O A further object of this invention is to so erenee-numeral l indicates a metal strap, the construct the straps that they will be in one first operation of forming which consists in piece, and also to provide means whereby mabending the strap upon itself,as shown in Fig. terial will be saved or increased insulation l. The strap is then suitably iiattened and may be made possible without increasing the widened at the portions 2 and 3 3, as indicated 75 2 5 space occupied by the armature. in Fig. 2, the temporary block A 4, which is in- A still further object of this invention is to dicated in dotted lines in Fig. 2, being inserted so construct the coil that a motor of increased between the portions of said strap during this power may be secured within a given space flattening process for the purpose of mainor that the air-space around the said armature taining a predetermined distance between the 8o 5o may be materially increased without increastwo portions of the strap at the point adjaing the size of said motor. cent to the central portion 5 5 of said strap. Briefly described, my invention consists in The strap being flattened, as just described, ilattenin g and widening the opposite sides of the same is bent over any suitable former into the portion of the straps which form the arany desired shape, which as indicated in Figs. 85 3 5 mature-coil that extends beyond the ends of 3 and 4C is of the type which is very commonly the armature-core,therebypermitting the said used. The ends 3 S of the strap have their extending portions of the coil to be much more outside ends G (i bent in such a manner that compactly formed, whereby much space will they are adapted to be connected with any be saved, and this space which is saved may suitable con'nnutator-bars. lt will be noted 9o 4o be utilized either for air-space, insulation, or that this flattening and widening process does increased length of armature, which would not decrease the sectional area of the strap at permit of a greater horse-power, and whichthe point where this has taken place, but that ever of these results is utilized the outside dithe uniform sectional area is maintained mensions of the motor will remain the same throughout the length of the strap. 95 4 5 as has been heretofore used. Referring to Fig. 5, (wherein il represents In describing the invention in detail referthe room savcd,) the utility of forming the ence is had to the accompanying drawings, portions of the strap which are not within the forming a part of this specification, and armature-core, as described, will be readily wherein like numerals of reference indicate seen as the `flattened portions 7 of two straps loo 5o like parts throughout J[he several views, in whichareinposition theymight occupy,while whichwere the same n ot flattened, as described, they would necessarily occupy the space indicated by dotted lines 8. It will be obvious that by forming the straps as described the same would run more directly from the slot in the armature-core to the commutator-bar, thereby saving much material; but should the same be run at an angle, which was heretofore necessary, a much increased insulation or air-space would be permitted. Should the distance between the rearend wall of motor and the commutator remain the same as heretofore used and the straps running to the coinmutator-bars be run at an angle, as indicated by 7 in Fig. 5, it will be obvious that the length of the armature-core would be materially increased, whereby a motor of increased horse-power could be obtained. In other words, with my construction of coil if the distance between the commutator-bars and the rear end wall of the motor as heretofore used is to be maintained it will be evident that by extending the armature-straps at a more acute angle I shorten the overhanging part of the coil, thus permitting ine to utilize the room thus obtained for the lengthening of the armature-core, whereby a greater horse-power can be obtained without materially increasing the diameter.

lVhile I have herein shown and described one i'orm of strap, it will be obvious that my improvements could be applied to any form of strap and that various means might be employed for forming said strap without departing from the general spirit of my invention.

Having l'ully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. An armature-coil consisting of a continun ous strap forming the saine and having I'lattened portions on the outer ends thereof and a iiattencd portion intermediate the length of said strap, substantially as described.

2. An arm attire-winding comprising a strap having the same sectional area with different shape of section, substantially as described.

3. An armattire-winding comprisinga onepiece strap having the same sectional area with different shape ol' section, substantially as described.

4f. An armaturewinding consisting of a continuous strap having the same sectional area and provided with flattened ends, substantially as described.

5. An armature-winding consisting of a continuous strap having the same sectional area and different shape of section, the ends of said strap being iiattened, substantially as described.

(i. An armature-wimling comprising a onepiece strap having flattened portions intermediate its ends, the sectional arca of the strap being the same and the shape ol' the section being dillerent, substantially as described.

7. In an armature-winding, a one-piece strap having llattened ends and flattened portions intermediate the ends, the said strap having the same sectional arca and dil'torent shape of section, substantially as described.

In testimony whereof I affix my signature in the presence of two witnesses.

CHARLES KNAIE. lVitnesses:

A. M. WiLsoN, E. E. POTTER. 

